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Home >> Lexus >> 2021 >> ES 350 Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 91 (Pre-Collision System - Diagnostic Codes) >> Pre-Collision System >> DTC U0418-81: Invalid Data Received from Brake System Control Module Invalid Serial Data Received [08/2021 - ] >> Description
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DTC U0418-81: Invalid Data Received from Brake System Control Module Invalid Serial Data Received [08/2021 - ]: Description

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2024 Lexus ES 350, 2024 Lexus ES 300h, 2024 Lexus ES 250, 2023 Lexus ES 350, and 2023 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.

For HV Model: 

For Gasoline Model: 

DTC No. Detection Item DTC Detection Condition Trouble Area
U0418-81 Invalid Data Received from Brake System Control Module Invalid Serial Data Received For HV Model: 
  1. Once 3 seconds elapse after turning the ignition switch to ON, the forward recognition camera receives a brake control system malfunction signal from the skid control ECU (brake booster with master cylinder assembly) for approximately 1 second or more.

For Gasoline Model: 
  1. Once 3 seconds elapse after turning the ignition switch to ON, the forward recognition camera receives a brake control system malfunction signal from the skid control ECU (brake actuator assembly) for approximately 1 second or more.
  • Electronically controlled brake system
  • Forward recognition camera